New light aluminum 1.8 flywheel from Supermiata
 

Just got our new flywheel in stock. 9 lbs!
Fits all B series 1.6 and 1.8 engines and uses a standard 220mm 1.8 clutch, mated to any OEM Miata transmission.
6061-T6. Replacement friction surfaces available if you ever wear one out (you won't). Made entirely in USA.
Yeah we know, not orange. Sorry!
https://supermiata.com/Flywheel-Miata-BP.aspx

https://cimg6.ibsrv.net/gimg/www.mia...22a3949f5e.jpg